Xis, Dreadnought of the Sea

Vigilance
Whenever Xis, Dreadnought of the Sea enters
the battlefield or attacks, each creature you
control explores. (For each of those creatures,
reveal the top card of your library. Put that card into
your hand if it's a land. Otherwise, put a +1/+1
counter on that creature, then put the card back or
into your graveyard.)
Crew 4